The first holiday to honour the working man is Labor Day, observed on the first Monday of September. The Knights of Labor Inaugurated Labor Day in 1882 in the United States. Today Labor Day is observed by Canada, United States and Puerto Rico.
Side note: The Knights of Labor was one of the first labor unions.
The Knights of Labor
- Knights of Labor (KOL) – Encyclopedia Britannica
Knights of Labor (KOL), the first important national labour organization in the United States, founded in 1869.
- Knights of Labor – Wikipedia
Knights of Labor (K of L), officially Noble and Holy Order of the Knights of Labor, was the largest and one of the most important American labor organizations of the 1880s.
- Labor Day – Wikipedia
Labor Day in the United States is a public holiday celebrated on the first Monday in September. It honors the American labor movement and the contributions that workers have made to the strength, prosperity, laws and well-being of the country.